DataSheet26.com

SC2450 PDF даташит

Спецификация SC2450 изготовлена ​​​​«Semtech Corporation» и имеет функцию, называемую «BI-Phase/Dual Controller».

Детали детали

Номер произв SC2450
Описание BI-Phase/Dual Controller
Производители Semtech Corporation
логотип Semtech Corporation логотип 

20 Pages
scroll

No Preview Available !

SC2450 Даташит, Описание, Даташиты
www.DataSheet4U.com
SC2450
BI-Phase/Dual Controller
POWER MANAGEMENT
Description
.eatures
The SC2450 can be configured as a dual converter or a
bi-phase converter for high current applications. The part
is designed for point of use power supplies with 10-30V
nominal backplane power sources. Multiple supplies can
be synchronized together to prevent low frequency har-
monics on the backplane. The power dissipation is con-
trolled using a novel low voltage supply technique, allow-
ing high speed and integration, with the high drive cur-
rents to ensure low MOS.ET switching loss.
The use of high speed switching circuits allows very nar-
row PWM outputs down to 15:1 voltage ratios. Single
pin compensation for each channel simplifies develop-
ment as well as reducing external pin count.
Capable of driving MOS.ETs via external driver transis-
tors for phase currents beyond 20A.
K Selectable dual output or bi-phase operation
K Direct drive for N-channel MOS.ETs
K Undervoltage lockout
K Synchronization to external clock
K Multi-converter synchronization
K Soft start
K .ast transient response
K Max duty cycle 45%
K Output over voltage protection
Applications
K Power supplies for advanced telecoms/datacoms
K SO IP, Ethernet and PABX power supplies
Typical Application Circuit
Revision 2, August 2001
1
www.semtech.com









No Preview Available !

SC2450 Даташит, Описание, Даташиты
SC2450
POWER MANAGEMENT
Absolute Maximum Ratings
Parameter
Symbol
Maximum
Supply Voltage
Voltage on BST Pins
Oscillator Frequency (1)
VIN
VBST
34
42
2
VCC
8
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering) 10 seconds
θJC
θJA
TA
TSTG
TLEAD
25
80
-40 to +85
-55 to +150
300
Note:
(1) Maximum frequency and maximum supply voltage could cause excessive power dissipation in the part.
Units
V
V
MHz
V
°C/W
°C/W
°C
°C
°C
Electrical Characteristics
Unless specified VIN = 24V, TA = 25°C
PARAMETER
Supply Voltage, VIN
Supply Current
Under Voltage Lockout
UVLO Hysteresis
Voltage Regulator
Pre Regulator Voltage
Bgout Voltage
Bgout Impedance
REGDRV Pin Sink Current
Error Amp
Input Offset Voltage
Input Impedance
Linear Transconductance
Internal Oscillator
Frequency
Frequency
Ramp Valley to Peak
Ramp Valley to Peak
CONDITIONS
ENABLE = 0
CREF = 4.7nF
I
REGDRV
RREF = 30K
RREF = 60K
VIN = 12V
VIN = 24V
MIN TYP MAX UNITS
10 30 V
30 40 mA
5.8 V
400 mV
6 7V
0.99 1 1.01 V
3 K
5 mA
10
5
.002
mV
K
A/V
1 MHz
500 kHz
1.5 V
3V
2001 Semtech Corp.
2
www.semtech.com









No Preview Available !

SC2450 Даташит, Описание, Даташиты
SC2450
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Unless specified VIN = 24V, TA = 25°C
PARAMETER
External Clock
CONDITIONS
Detect Time
Rise Time < 50ns
Unlock Time
Frequency Range
High Side Gate Drive
Max Duty Cycle
Peak Source
Peak Sink
Low Side Gate Drive
Peak Source
Peak Sink
Sync Drive Timing
CLOAD = 10nF
CLOAD = 10nF
CLOAD = 10nF
CLOAD = 10nF
Min Non-overlap
PWM Match
Logic Input Pins
CLOAD = 1nF Fet Drive < 1V
50% Duty Cycle, FOSC = 1MHz
Input Bias Current
Logic Threshold
VIN = 0 - 5V
FB2 Disable Threshold
Over Current Protection
OCP Threshold
OC+ I/P Bias Current
OC- I/P Bias Current
VIN = 24V
Over Voltage Protection
OVP Threshold
Thermal Shutdown
MIN TYP MAX UNITS
2 µs
10 50 µs
0.3 1 MHz
45 %
1A
1A
2A
2A
20 50
-1
ns
1%
-10 10
0.8
VCC - 0.7V
103 115 127
700
50
µA
V
V
mV
µA
µA
120 %
150 °C
Note:
(1) This device is ESD sensitive. Use of standard ESD handling precautions is required.
2001 Semtech Corp.
3
www.semtech.com










Скачать PDF:

[ SC2450.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
SC245(SC2xx) Thyristors / TRIACSemitronics
Semitronics
SC2450BI-Phase/Dual ControllerSemtech Corporation
Semtech Corporation
SC2453High Performance Quad Output Switching RegulatorSemtech Corporation
Semtech Corporation

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск